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Side by Side Diff: patched-ffmpeg-mt/libavcodec/mdct.c

Issue 789004: ffmpeg roll of source to mar 9 version... (Closed) Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/ffmpeg/
Patch Set: '' Created 10 years, 9 months ago
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1 /* 1 /*
2 * MDCT/IMDCT transforms 2 * MDCT/IMDCT transforms
3 * Copyright (c) 2002 Fabrice Bellard 3 * Copyright (c) 2002 Fabrice Bellard
4 * 4 *
5 * This file is part of FFmpeg. 5 * This file is part of FFmpeg.
6 * 6 *
7 * FFmpeg is free software; you can redistribute it and/or 7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public 8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either 9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version. 10 * version 2.1 of the License, or (at your option) any later version.
11 * 11 *
12 * FFmpeg is distributed in the hope that it will be useful, 12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details. 15 * Lesser General Public License for more details.
16 * 16 *
17 * You should have received a copy of the GNU Lesser General Public 17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software 18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */ 20 */
21 #include "dsputil.h" 21
22 #include "libavutil/mathematics.h"
23 #include "fft.h"
22 24
23 /** 25 /**
24 * @file libavcodec/mdct.c 26 * @file libavcodec/mdct.c
25 * MDCT/IMDCT transforms. 27 * MDCT/IMDCT transforms.
26 */ 28 */
27 29
28 // Generate a Kaiser-Bessel Derived Window. 30 // Generate a Kaiser-Bessel Derived Window.
29 #define BESSEL_I0_ITER 50 // default: 50 iterations of Bessel I0 approximation 31 #define BESSEL_I0_ITER 50 // default: 50 iterations of Bessel I0 approximation
30 av_cold void ff_kbd_window_init(float *window, float alpha, int n) 32 av_cold void ff_kbd_window_init(float *window, float alpha, int n)
31 { 33 {
(...skipping 186 matching lines...) Expand 10 before | Expand all | Expand 10 after
218 x[n8+i ].re = r1; 220 x[n8+i ].re = r1;
219 x[n8+i ].im = i1; 221 x[n8+i ].im = i1;
220 } 222 }
221 } 223 }
222 224
223 av_cold void ff_mdct_end(FFTContext *s) 225 av_cold void ff_mdct_end(FFTContext *s)
224 { 226 {
225 av_freep(&s->tcos); 227 av_freep(&s->tcos);
226 ff_fft_end(s); 228 ff_fft_end(s);
227 } 229 }
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